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Advisories

FFmpeg through 9.0.2 VBLE Decoder NULL Pointer Dereference via vble_decode_frame()

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Severity
medium
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-252 Unchecked Return Value
CVSS
6.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Joshua Rogers (AISLE Research), Michael Niedermayer
Description
FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in vble_decode_frame() in libavcodec/vble.c because it ignores init_get_bits() failure on oversized packets. Attackers can supply a crafted AVI file with a 268435452-byte VBLE frame, causing reads from a NULL bit reader buffer that crash the process.

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